Water-jet ejector.



D. B. MORISON. WATER JET EJEGTOR. APPLICATION FILED Mn. 21, 1912.

Patented Oct. 21, 1913.

3 SHEETS-SHEET 1.

D. B. MORISON. WATER JET EJEGTOR. APPLICATION 11LE'DMAB,.Z1,1912.

Patented Oct. 21, 1913.

3 SHEETS-SHEET 2.

W0C JWM W. (ya/1 4 D. B. MORISON. WATER JET EJECTOR. APPLICATION FILED MAR.21,1912.

Patented 0013.21, 1913.

3 SHEETS-SHEET 3.

DONALD BARNS MORISON, 0F HARTLEPOOL, ENGLAND.

WATER-JET EJECTOE.

Specification of Letters Patent.

Patented Oct. 21, 1913.

Application filed March 21, 1912. Serial No. 685,284.

To all whom it may concern:

Be it known that I, DONALD BARNS Monison, asubjectof the King of Great Britain and Ireland, residin at Hartlepool, in the county of Durham, England, have invented Improvements in Water-Jet E ectors, of which the following is a specification.

This invention relates to improvements in water jet ejectors, such for example, as may be used in connection with steam condensing plant working under vacuum.

Ti e principal object of the invention is to obtain a high efliciency from such apparatus when using a given quantity of water and o; 'ven amount of power.

11 carrying out the invention in one par ticular form, and for the purpose of withdrawing air from a steam condenser, the apparatus may be constructed in the following manner: lVithin a receiver into which the mixture of air and vapor passes from the condenser or into which receiver it may be discharged from the condenser by means of a steam jet device, there are arranged multiple jets of water for the condensation of the vapor and the discharge of the air, such jets being divided into groups so that the water from each group converges into a separate combining or collecting tube each separate combining or collecting tube being arranged with an annular water jet which draws the Water and air from the tube and discharges it into a pipe common to all, the lines of flow from the receiver through each combining tube converging into the common discharge pipe. I

I have found by careful experiment that the air entraining and withdrawin capacity of a water jet air ejector is large y in fluenced by the proportions and dispositions adopted, so that in apparatus according to the present invention, facilities are afforded for proportioning and disposing each group or unit to the best advantage for the particular purpose employed, and then by multiplying units in the manner described a very high aggregate etliciency is obtained.

The particular design of apparatus ac-' cording to the resent invention may vary in accordance with the re uirements, for eX- ample, in the apparatus just described, the annular or other jets, may, instead of delivering into one common discharge pipe, dis charge independently of each other. Or there may be main jets or multiple smaller jets, or both, arranged in groups in the re ceiver, each group discharging into a combining tube leading into a common discharge pipe, and beyond the point of convergence of the several combining tubes there may be an annular jet common to all such tubes.

In the accompanying illustrative drawings, Figures 1, 3, 4 and 6 show in sectional elevation various constructions of water jet ejectors according to my invention, it being understood that the u per part of Figs. 1 and 4 are shown bro iren away from the lower part, and Figs; 2 and 5 underside views respectively 0 the portions a of the water jet ejectors shown in Figs. 1 and 4.

In all the figures the same letters of reference are used to denote the similar parts.

Referring to Figs. 1 and 2, the water jet ejector comprises a. casing built up of three sections a, b and c, Fig. 2 being an underside view of the section a which is shown in sectional elevation in Fig. 1. The upper portion a forms with the portion 6 a receiver h and contains a water supply chamber (1 having three extensionse which are .provided with central water'jet nozzles f and multiple smaller nozzles g discharging into the combining tubes Z contained in the middle section b of the ap 'iaratus. The tubes is are provided with ad ustable nozzles I so as to form with the lower section 0 the annular jets m which deliver from the chamber 77 into the common discharge pipe 11. The nozzles Z may be screwed into the combining tubes Z in the manner illustrated and fitted with lock nuts 0 so that by adjusting the nozzles in or out of the combining tubes the amount of water passing through the annular jets in may be varied. The water is supplied to the chamber d through the branch 1' and into the chamber 9 through the branch .9, the branches beingwonnected to the same or independent means of supply and may be provided with valves so that. the supply of water to the ejector can beregu lated.

The water jet ejector described may be connected by the pipes t and t to a steam jet device t which is adapted for use in connection with steam engine condensers working under vacuum, the air and vapor being withdrawn from the condenser through the inlet j and discharged by the steam jet w through the pipes t t into the receiver Ii wherein the steam is condensed and the air discharged from the receiver by the water Jets. "1

Fig. 3 is u modification of the arrange iuent shown in Fig. 1 and in which the combining tubeslc, instead of being provided with independent annular jets m, Fig. 1. are

arranged with a com on annular jet m in advance of the point of convergence of the combining tubes k;

Figs. 4 and 5 illustrate another construction of Water jet ejector according to my invention, Fig. :i being an underside view of the section a which is shown in sectional elevation in Fig. 4. The apparatus is'similar to that shown in Figs. 1 and 2, except that the-ejector contains six groups of jets each group consisting of a central soli water jet f. multiple'smallcr jcls g, and arranged in advance thereof the annular jets m, the whole of the jets receiving their supply of water through the inlet branch 8 which i indirect communication with the chamber 7; and communicates with the chamber 11 through the passage i. The lower section c forming the discharge ipe n, is providcd with tubes of which tam with the nozzles Zthe annular water jets m, the noz zles 1' being screwed into the combining tubesjc and provided with washers 0 so that by vnryingrthe thickness of the washers the size of the annular jets m and consequently the amount of water priming thcrethrough may be adjusted. In this arrangement as in the previous arrangement described with reference to Figs. 1 and 2, the receiver h of the water jet e ector may be connected to a steam jet. device 15 for the purpose here-inheforc referred to.

F ig. 6 is a modification of the apparatus shown in Fig. 4. the combining tubes In and annular water jets or. delivering' into independent (lisci'isrge pipes 11-.

in alt cases there-may he means for controlling the water supply to any part of the apparatus, as for example. to each of the jets or groups of jets in the receiver or to the annular jet or unnuiar jets arranged in advance, of the combining tubes leading therefrom.

The water jet ejectors described may be used in connection with steam condensers of any type. for example, they may be used in connection with surface condensers from which the aerated vapor alone or together with the water of condensation passes into the receiver of the ejector either directly or hv means of a steam jet; they may be used in connection with jet condensers in which the ae ated vapor passes into the receiver of the ejector, the writer of condensation bring withdrawn by other means; they may be used as a water jrt ejector condenser in which all the steam flows into and is contl nsctl in'lhe receiver. or they may he used for withdrawing air or gas in any connecticu and for any purpose, the design being must first mingle with water spray so as to become entrained with the small particles of water which carry the air into the center jet issuing from the elongated jet tube. It will be seen from the illustration that the jets g are small and so formed as to produce a shower or spray, while the jet f is large rind acts to forcc.the shower or spray into the combining tube is from which the water is ejected by the annular jet m. If n large jet f alone were used, or if multiple large jets f were employed, notonly would the consumption of ejecting water be very great and therefore the power required to work the apparatus unnecessarily large, but the eliiciency of the apparatus would be very low as the air entraining effect of the surface of the high velocity jets would pnly be small, whereas by my arrangement the small jets 1 produce a shower which in falling through the air absorbs itend carries it into the large'jets issuing from the elongated nozzles f.

\Vhen a steam jet is employed in combination with the water jets, the shower or spray of water issuing from the jets g condenses the steam from. the steam jet and carries the aerated particles of water into the centrel water jet f by which they are discher ed.

What I claim is I 1. A vtnter jet ejector comprising a receiver ha ving a plurality of groups of jets, each group consisting of an elongated jet. tube surrounded by a series of short jets, and a separate combining tube for cool: group of jets, substantially as described.

2. A water jet ejector comprising a re ceivcr containing multiple water ets arranged in groups. each group of jets deliver ing into a separate combining lube WlllCll is surrounded by on annular Water jet. ouch combining tube and unuulnr water jet delivering int a discharge pipe.

3. A Watt-r jetv ejector compri ing a rcccivcr containing multiple water jets arranged in groups, enrli group of jets delivcring into a separate combining tube having one or nure water jt-ls in :uli'nucc thereof.

4. A water jet ejector comprising: :1 reccivcr containing multiple water jets urrungcrl in groups. each group of jets delivering into a sepnrnte l'llmitllllllfi tube having: on annular \vntrr jet in ndvnnce thereof, said cmubinint tubes converging into one common discharge pi pr.

5. A water ejector comprising :1 re eiver containing! multipl 'ulft jets .n'inuged in group ach group of j ts. delivering into a billing t; s

3:5 am having an mu mur mypi :1? w a; in the M12110 combining Junflar jet m miwbmie of each Said Gambi a Water jet in advanw thereof, said mmzinuin tubes and annular jPt, (-onwxgiz'zg mm um: mg 121m being sfipamwiv mzztmfisd. vonunon dismal-gs pip. 33v The wmbizmtimfwith :21 steam con- (3. A Water jet ei-uctm' cmnprimng a rvriezmsr 0 1: as. Wat ax ejerrmr m'imyrising a ceiwxr-omainingg suvm'ai :unprs of Watw xmmiwr 410113.251? muifipie waiter jaw, ar-

'eups whereby air and apor a ing hate the waiver :ixsflza. ged flu'frefmm by ia 7?: 1 9 of in said nbin in advance 145, car-h gmup somprifidng :1 centred wmvjet and xzmitiplv smalier :rmizai ii muitipk: group Hugging m 1 mg iiuha ivacfiz'xg from L- r isilzing {112w ha 1 g an maxim wmur "n advance?! 2, said m2. H mfmiiaz vvu jMs; mm'ergnng inm we 4, mm: disCi'uHgQ i T. An 'rsjciuz' m u'i a j3uLing deviie and :1 11 Vice having :1 nm-iver in jail discharges, mi! I'HBCMQ) I, tiple water 3 :13 urmngesd :2 group of jets "ellwb *1; in -;z 4 billing Lube, suia i i'ng mm 0110 mum 5i ejenwl' ejecfmg devit "he ha mg a m jei', iihi' tiph! J vapor Em; 52v; mmiver efmm by T 9:18: 1; said re e mmbining 0!; m :uh'ance and zmmuiar neby dismm ihe resup of jais in vu-e I'zaving :1 ween jet discharg 'biple water as awning u L group of jeis 'dehvmmg into a combining tube. having an alumni-(1r in advance thereof, eavh c-Jn'abin and armvlar water jet delivering charge pipe,

* converg- (uni mpvr 1min p (c prowing inia a szepawaio :jmnmzq no cumbuun" tub-s mama-mug 1: mun dlscl pipe 0 hmm mm:

having an anmxiar W n uiwmm thereof, am! meanifm: mg raie r K 'mm :1 ummrmw womsupplv to each group of w ring n ya/{w vf. m :uiwmce nwans for enm'rnmnp hz an nular et" :1 salri mam/er.

11. A mam e ector snmplmli mates;- jet eijeatur compz' 'ing a Gas mmmting wf an upper 50-? a middle Mwvx' ("31 MI per 30'?- wm' tin: water sup 0n containing 1d 1107,2505: distin" f u-wing with ,i'fifi Milan :muflavr wafer jets in "f tho cmx'xbimng tuiw unc'iwhiz'zh R ibvarefzxwn l'hr' a disf e or pipe fnrmr-d in said lower fur the djsvnm file rerwwx', an annular water 1 f and: (:on'xhining like and :m roiling {v s; in m'lvrmz- 12. waim' jit e' (':'"'\'e:" wrliuining (I rang In mwmpfi i upof p ing 'zmir Mayan mnmnmgg' who hmm an annular {Pi 5n admuiww than 1 eej mting :wvi anfi a muhiipia water jetde" l, i i

combining tubes in said middle section an annular water jet. in advance of each combining tube for the purpose of ejecting the fluid therefrom and delivering through a discharge pipe or pipes also formed in said lower section.

Signed at \Vest Hartlepool in the county 20 of Durham, England, March 1912.

DONALD BARNS MORlSON. \Vitnesses HARRY FU'l'llERGILL, JOHN (Jo-nu.

this 12th day of 

